CAS No. 41205-21-4


ACTIVITY: Fungicide (pyrrole)

Note: Chlorfenapyr is also classified as a pyrrole

CAS Name: 3,4-dichloro-1-(4-fluorophenyl)-1H-pyrrole-2,5-dione


Regulatory Information
(only comprehensive for the US)
US EPA Registered: No 
Registered use in
(includes only a limited list of countries)

Japan's Maximum Residue Levels (MRLs)

Apple, Onion, Potato, Unshu orange, Japanese Persimon, Tea  

-- Note high level of 35 ppm in tea

Other Information
Molecular Formula: C10H4Cl2 F NO2 
Manufacturers: Mitsubishi Chemical 
Other Names: Sparticide, Spat, MK-23, fluoromide 
Of special interest:
Glossary of Pesticide Chemicals, October 2001. A listing of pesticides subject to analysis of residues in foods and feeds by the US Food and Drug Administration. 

Adverse Effects:

As of February 2005: no data available

Fluoride Action Network | Pesticide Project | 315-379-9200 | pesticides@fluoridealert.org